Katana Letter Opener

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Picture of Katana Letter Opener
closed bright.jpg
handle bright.jpg
letter bright.jpg
card bright.jpg
blade light.jpg
Musuki bright.jpg
stored light.jpg
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backside light.jpg
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I made this half scale Katana from steel, brass, paracord, and wood. I worked on it through out the course of two weeks with a cost of about $12 dollars. It's a Christmas gift for my son. I'm sure one day he'll use it to strike fear in his bills but for now it will be a cool display on his bookshelf. The blade is about 11" long. Overall length is 16".

It was the most fun I've had creating something. I'm the guy who has to read every plaque at every historical site. Throughout this build, while referencing several pictures and videos, I got to read something interesting about nearly every part of a Katana. It was also fun to pull metal working, wood working, and knot tying all into one project.  

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Step 1: Project planning

Picture of Project planning
How big is a Katana anyway? Apparently it varies by the height of the samurai. I knew I was going to use 1/2" flat bar so there was one dimension. With the help of ratios I figured out how long the blade should be if it's 1/2" wide. 

From there I got together some other materials. I wasn't sure what all I would end up using but I had this to start. 

Step 2: Setting the curve

Picture of Setting the curve
Again, using ratios from measurements off of photos, I figured how much of a curve the blade should have. I started by over-bending in a curve. Then, I progressively closed the jaws of my vise as I feed the bar through. When the bar hit a spot where it would not freely move through, I slightly straighten the curve. I did this until the curve matched a measurement I drew on a plank of wood.  

Step 3: Cutting the blade length

Picture of Cutting the blade length
After settling on a length of 16" I used a chisel to part the bar. I then rough sketched the tip of the blade and parted that off too. 

Step 4: Cutting the groove

Picture of Cutting the groove
I placed a ball diamond bit in my lathe and ran it up and down the blade. To refine the groove I rolled up sand paper and sanded it out.  
foobear2 months ago

Mr. Bling, you are the King!

Phiske2 months ago

Pretty cool! Great detail work.

Mr.Sanchez4 months ago
As I said before :" Your Kung Fu is waaaay better than mine . Ready in my to do List.Thnks for share.
tkline24 months ago
I agree. Dad of the year...
Bobmonkey074 months ago
Would you post a link to that video please?
amekdala4 months ago
it looks amazing! good idea to do :)))
boris4004 months ago
Very nice, but I guess you didn't fancy forging one the traditional way. It would take forever:-)
Amazing, Your son is going to be ecstatic over this piece of Genuine Artistic Creation. What a replica! Can hardly tell the difference between a Picture of a Real Katana and this ... Actually what you have made here is a mimiture Katana ... it is so good and your skill level is extreamly high I consider this to be the real deal! Good Job!
Mrballeng (author)  instructables614 months ago
Thanks for all those nice words. I had a good time making it.
audreyobscura4 months ago
So AWESOME! And really well documented! Great work, AGAIN!
Mrballeng (author)  audreyobscura4 months ago
Thanks Ms.Obscura!
jwilliamsen4 months ago
Coolest. Dad. Ever. :)
pojken4 months ago
Amazing! Your son will treasure it!
bedward34 months ago
Respect! Such craftsmanship you're sir
TP_inc4 months ago
The groove on swords is to let the blood run down it
lafnbear4 months ago
Amazing! Adopt me please?
bob30304 months ago
Very well made instructable. The sword is awesome. I'm sure your son will appreciate it. A gift made from the heart. Thanks for sharing with us. PS I won't let your son know before Christmas.
rolltidehank4 months ago
Very impressive. I saw a samurai sword letter opener at the department store in Epcot's Japan. It was about half the size of yours but cost about $150 if I remember correctly. Cool project!
TheGreatS4 months ago
Awesome, as usual.

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